Well well...
Politicians taking advantage of the climate change issues? No way, as if politicians never took advantage of anything... It's no surprise that some politicians try to get votes out of the question, they know there's a lot of people out there who ''believe'' in climate change. There will always be people on both sides of a question to try to take advantage of the respective groups.
And really, what kind of money can the scientists can make on that? Most of the true science is being toned down in a lot of places in favour of engineering, which ironically enough, pure science is the food plate of engineering. Engineering and pure science are two sides of the same coin. Governments give less money to ''regular'' scientists for simple reasons: they don't give enough money in the short term and very often their discoveries go against their ideology. That's something very important happening in Canada right now for example.
There's no money to be made with pure science, climate scientists just try to warn the world about how self-destructive we are. I mean, even if climate change wasn't true, just look in Asia. People are killing themselves, giving themselves cancer, asthma and plenty of shit like that because their environment is so polluted by their cars. People take pictures of themselves in front of a Hong Kong with a blue sky photograph in Hong Kong iteself because it's all grey and you can't see nearly as far as before. Do we need to show that it's bad for the planet to show that we should radically diminish our petrol consumption? It's killing ourselves.
Speaking of money, who do you think makes money out of climate change denial? First and foremost the oil industry for sure! It would be catastrophic for them for us to stop using gas cars and the likes. They want to protect the huge part they have on the energy industry, it's almost a monopoly they have. Just look how ridiculously rich the Koch brothers are for example! The new pipeline thing in North America can give them billions more even if eventual leaks are certain and that will be us who will pay the bill. And people with money have power and the opportunity to buy politicians and tv channels (who are bought by politicians).
It's so possible to abandon the oil industry, there's a lot of other energies we can use. A lot of incredible discoveries were abandoned because it bothered some people with big pockets. Of course it costs a lot of money to use new technologies, but that's always the case! They are never 100% efficient at first, we got to try them to make them better. You know, there was a time before the oil industry... Jobs will be lost but new jobs will be created, that's the way of life. The oil industry is terribly afraid that we'll make the right choices, because they'll loose all their power.
And don't forget there is no infinite petrol on this planet. The industry will die one day or another, we'd better change to a new one now when we can prepare ourselves rather than driving full speed in a brick wall only realizing later we have no more oil. And imagine all the shit on the planet that will happen if oil becomes a rare resource and we have no alternative ready! That's wars that will happen, political instability, everything climate change deniers tell us will happen if we try to go to new energies. And let's not forget all the shit that will happen to Earth, costal cities being drowned, etc.
A word about climate change. It's not ironic that some people call it warming and others change and all. It's actually climate change but warming is accurate in a way that the climate will change for the worse. The Earth is a complex system, nowhere heats the same way as everywhere else. There are ocean streams, air streams, many sub-systems that affect the earth's climate. Some place might become colder, getting more rain as others get hotter. It all depends on how these smaller systems are perturbed by the too much CO2 in the air and how it affects its immediate environment and the other systems.
ANYWAY. There are way more greener and more efficient and cost-effective energies to be used. We just have to try them and research them more. But the oil industry monopoly and their big pockets is what is keeping us away from evolving. Why stay with oil? It's seriously starting to be an old energy source. We always found new and more effective energy sources and adopted them, why can't we do it now?